Find a Nth highest or lowest numbers in a given series of integers using indexing technique in Python

from System import *
from System.Collections.Generic import *
from System.Linq import *

class Program(object):
	def Main(args):
		#Question #3: Find a Nth highest or lowest number in a given series of numbers.
		lstNumbers = List[Double](1, 2.06, -36.4, -4, 5.90, 618.9, 79.8, 8, 9, 18.0, 23.7)
		itemsCount = lstNumbers.Count
		sortedList = lstNumbers.OrderBy().ToList()
		minNum = sortedList[0]
		maxNum = sortedList[itemsCount - 1]
		Console.WriteLine("Min = {0} , Max = {1}", minNum, maxNum)

	Main = staticmethod(Main)